Locomotive smoke-box.



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LOCOMOTIVE SMOKE BOX. APPLICATION FILED JAN. 10, 1903. 110 MODEL. 2 SHEETS-SHEET 1.

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No. 738,742. PATENTEDSEPT. 8,1903.

LQWMMWE'. SMOKE BOX. AEIBLIOATION FILED JAN. 10, 1903.

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I To all whom it mayconcern:

Be it known that 1, JAMES E. OooKE, of

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. UNITED I STATES Patented September 8, 1903.

PATENT FFICE.

JAMES E. CO OKE, OF GREENVILLE, PENNSYLVANIA, ASSIGNOR OF ONE- HALF TO JAMES K. BOOTH, OF GREENVILLE, PENNSYLVANIA.

LoooMoTwE SMOKE-BOX.

SPECIFICATION forming part of Letters Patent No. 738,742, dated September 8, 1903. Application filed January 10, 1903. Serial No. 138,526. (No model-l Greenville, in the county of Mercer, State of -Pennsylvania, have invented a new and use- My inventionrelates to the smoke-boxes or front ends of locomotives, and is designed to prevent the burning out and deterioration of the fronts which results from the accumulating of cinders in this box. Heretofore in the difierent arrangements of these front ends the cinders have been to a large extent thrown-down and accumulated in the front end, and owing to their high degree of heat as they accumulate they heat up the front and other parts of the smoke-box and cause them to deteriorate rapidly.

My invention is designed to drive all the cinders out through the smoke-stack, and thus prevent the burning of the front and box and do away with the necessity for cleaning the front at frequent intervals, as has heretofore been necessary.

Figure 1 of the drawings is a longitudinal vertical section. showing one form of my invention.

77 are the steam-supply pipes for the 10co-.

motive-cylinders, these being connected at the tops to the steam-main, which leads over the flues.

The above-described parts are old and well known and form no part of my invention.

8 is the exhaust, which leads upwardly from the central part of the bottom and is provided with a nozzle 9 of smaller diameter,

forming an annular shoulder 10 between them, upon which rests the inner ends of the two sections 1111 of a divided plate or sheet which extends across the box from side to Fig. 2 is a sectional front eleva tion,-and Fig. 3 is a horizontal section on theside. This sheet is preferably perforated throughout the whole or a major part of its length, and the area of these perforations is regulated according to the size of the locomotive, the perforations being spread along the plate in such a way as to equalize the draft. I have found that by using this plate instead of netting at this point I can produce an equal draft on the fire and at the same time prevent getting too heavy an up:

draft at this point, which would cause the cinders to drop upon the floor beneath. The

plate is preferably made in two halves, as shown, for ease in assembling, and its end or notched portions are cut out toreceive the steam-pipes. The usual deflector 12 extends from above the flues down to and joins the perforated plate, the deflector preferably be ing provided with a ledge, upon which the rear edge of the plate rests and is bolted. The front edge of the perforated plate is bolted to an angle 13, supported at its ends by the bent brackets 14. I

From the front edge of the perforated plate I extend netting to the top of the box, this netting preferably being arranged to the form shown, in which the section of the netting 15 has a bent lower portion bolted to the perforated plate by the same bolts which secure it to the supporting-angle, while the upper edge of the netting is bolted to a transverse horizontal angle 16, secured by end brackets 17. The remainder of the netting is secured to an iron frame of how shape, the cross-bar of which rests within the angle 16, while the upper bowed part'is removably held in place by key-bolts 18, extending through enlarged portion in the bow and held by keys. By merely knocking out these keys this section of netting will drop forward and can be removed to give access to the petticoat-pipe or other parts. The other section of netting can be removed by taking out the bolts, if necessary.

To regulate the draft in the furnace, I provide a deflector or baffle 19, which extends downwardly and forwardly at an angle from the angular support for the plate, being bolted to its front flange, and this baffle is provided with an adjustable portion 20, held by slot-and-bolt connections and by which the passage between it and the lower part of the smoke-box can be regulated in area. The petticoat-pipe is not connected directly to the smoke-stack; but a space is left between the upper end of this petticoat-pipe and the top pass under the baffle and thence are sucked upwardly through the netting and pass into the smoke stack, part of them passing through the petticoat-pipe and part through the space above its upper end. I have found that in actual practice a locomotive can be used with myimprovement without any cleaning out of the smoke-box. One of these engines has been run for over five months without cleaning the front. It will be noted that the netting extends upwardly and forwardly at an angle. The result of this is that the suction draws the cinders upwardly along this netting, along which they pass and are thereby broken np until they are small enough to pass through it and be drawn into the stack. If the cinders are still too large when they reach the upper end of the netting, they drop down and are sucked up again into the lower part of the swirl until they are ground up and drawn out. The larger and heavier cinders are partially reduced and sucked up through the holes in the plate, the remaining particles being drawn under the baffle and thence up along the inclined netting, where they are further reduced and'sucked through.

I have found in practice that the perforations in the horizontal plate are necessary in order to obtain the proper draft, and it is probable that the depending baffle causes a back pressure, which is relieved by these perforations, and I find that the area of the perforations should be graded according to the side of the locomotive, the amount of draft, 850.

The advantages of myinvention are nu merous. The engine steams more freely, there is a smaller consumption of coal, the smoke box is not filled up with cinders, and the front ends do not burn and crack. The system can be easily and cheaply applied to existing 10- comotives, the draft can be easily regulated, and easy access is given to the smoke-box for repairs. The draft is equalized over the firebox and flue-sheet, preventing leaky flues and the cutting oif of the end flanges on the center flues. The cinders are thoroughly broken up before leaving the smoke-box, thus reducing the liability of starting fires by discharge of large hot cinders from the locomotive. The perforated sheet may be used withany type of exhaust device, and the whole system is cheap and easily applied.

Many changes may be made in the form and arrangement of the parts without departing from my invention.

I claim- 1. A locomotivefront having a substantially horizontal transverse perforated plate, an exhaustnozzle terminating above said plate, a depending baffle in front of the plate, and an upwardly and forwardly inclined netting closing the space above and in front of the plate; substantially as described.

2. A locomotive-front having a transverse perforated sheet extending across .its intermediate portion, an exhaust-nozzle extending upwardly through the sheet, a rear deflector extending from the perforated sheet back to the flue-sheet, a depending deflector in front of the perforated sheet, and upwardly and forwardly inclined netting covering the space above the sheet and in front of the petticoatpipe; substantially as described.

3. A locomotive-front having a transverse perforated sheet extending across its intermediate portion, an exhaust-nozzle extending 5 upwardly through the sheet, a rear deflector extending from the perforated sheet back to the flue-sheet, a depending deflector in front of the perforated sheet, and upwardly and forwardly inclined netting covering the space above the sheet and in front of the petticoatpipe, said netting being in two sections, with one section removable, substantially as described.

In'testimony whereof I have hereunto set my hand.

JAMES E. COOKE. Witnesses:

GEO. B. BLEMING, J OHN MILLER. 

